Measurement of the differential pressure of liquid metals

Patent · Mon Sep 01 04:00:00 EDT 1975

OSTI ID:4130399

Metz, H J

This patent relates to an improved means for measuring the differential pressure between any two points in a process liquid metal coolant loop, wherein the flow of liquid metal in a pipe is opposed by a permanent magnet liquid metal pump until there is almost zero flow shown by a magnetic type flowmeter. The pressure producing the liquid metal flow is inferred from the rate of rotation of the permanent magnet pump. In an alternate embodiment, a differential pressure transducer is coupled to a process pipeline by means of high-temperature bellows or diaphragm seals, and a permanent magnet liquid metal pump in the high-pressure transmission line to the pressure transducer can be utilized either for calibration of the transducer or for determining the process differential pressure as a function of the magnet pump speed. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-33-011276
• Assignee: to U.S. Energy Research and Development Administration
• Patent Number(s): US 3902369; PAT-APPL-466,347.
• OSTI ID: 4130399
• Country of Publication: United States
• Language: English

Related Subjects

*LIQUID METALS-- PRESSURE MEASUREMENT
*LMFBR TYPE REACTORS-- REACTOR COOLING SYSTEMS
*PRESSURE GAGES-- DESIGN
210500* --Nuclear Power Plants--Power Reactors
Breeding
ELECTROMAGNETIC PUMPS
FEEDBACK
FLOWMETERS
N46400 -- Instrumentation--Miscellaneous Instruments
N77500* --Reactors--Power Reactors
Breeding